Lemuel p



UNITED STATES PATENT OFFICE.

LEMUEL P. JENKS, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO ISAAC H. CLARK, OF SAME PLACE.

HAND-STAMP.

Specification forming part of Letters Patent No. 42,8l9, dated May 17, 1864; antedated May 2, 1864.

T0 all whom it may concern:

Be it known that I, LEMUEL P. J ENKs, of Boston, county of Suffolk, and State of Massachusetts, have invented a new and Improved Mode of Constructing Hand-Stamps for Making Printed Impressions on Paper, 85e.; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consists in so combining a exible rod with a face-plate of a stamp, a spring, and a hollow handle, as that the face ofthe stamp may, when giving an impression, though striking at any angle ordinarily used with the plane of the paper, still meet the paper at all parts of the face of the stamp.

In the drawings annexed, Figure l is a drawing of a perpendicular section of my invention, and Fig. 2 is a side view ofthe same.

ln Fig. l, A A represent the handle, with alongitudinal cavity running through its center'.

B represents the circular plate of the stamp, .vecured by a dovetail and the screw C to the circular block I) D, which has turned upon it at vthe top a Jing, E E, of smaller diameter than the top of the block I) D and concentric with the same. This block I) D bears, firmly fastened to it by its lower end, a flexible steel rod, F, which passes np into the cylindrical cavity in the center of the handle A A to the nut, into which the rod F is screwed, riveted, or soldered. Y

H H is a ferrnle firmly screwed on the lower part of the handle A A, and bearing in its lower portion a spring of metal or of indiarubber, I I, upon the lower portion of which spring impinges the upper part of the ring scribe the arc of a small circle, (whose radius is the distance between that point and the point of impingement of the face-plate 011 the paper but as the whole stamp moves in the area of a large circle, (whose center, we will say, is the elbow of the operator,) the are of the small circle cannot be described without a lengthening of the radius of the large circle, the connection between the stamp and its handle being not jointed, but fixed; but the rod which passes up the handle A A nearly its extreme length (the handle enveloping it) is tlexihle, and the cylindrical cavity through which it passes is much greater than the diameter of the rod, these conditions permitting the radius of the large circle to be lengthened, ard thus the are of the small circle can be described. The result is the face of the stamp isvlaid parallel with the plane of the paper and a perfect impression is eiect'ed. On the withdrawal of the stamp the rod F resumes its straightness; and sometimes, instead of the dovetail on the face-plate B, I turn a short shaft on the face-plate B, upon which the screw C impinges, and sometimes I make this shaft hollow and place movable types in it, securing them by a screw on the side, (opposite the screw C,) which screw passes through a slot in the side of the hollow shaft, and

sometimes I screw the face-plate onto the block D D.

I do not claim any jointed connection of any nature between the face-plate and the stamp-handle, whether ball and socket, indiarubber, or any other; nor do l confine myself to any particular spring.

lhat I claim herein as of my own invention, and desire to secure by Letters Patent, 1s-

l. The combination and arrangement effaceplate and fixed flexible rod, without breakage or joint, with the spring and handle, all substantially as described.

2. The hollow handle, in combination with the face-plate, spring, and flexible connection, substantially as described.

LEMUEL P. JENKS.

Witnesses:

A. KINGSBURY, (l1-Ms. E. ALLEN. 

